When I mouse over an airport ID, it just shows the same airport name already displayed right beside it.
What I want to see is the name of the CITY and STATE which are often not known.
Example: If I mouse over (KLIT) it says ‘Adams Field’ right beside ‘Adams Field’. Now that’s not exactly helpful.
So I get to see "Adams Field’ twice!!
The mouse over should say LITTLE ROCK, AR.
I’m quite certain your airport database includes city, state, & much more.